Improvement in fire-proof roofing compositions



106. COMPOSITIONS, O i 7 E i 'E. KUNZENDORF.

Fire-Proof Roofing Composition.

No.16] 689. I Pal ented April 6,1875.

161.690. Fmz-Paocr Boorme Coma:-

nous. Emil Knnzendorf, Newark, N. J. [Filad Mar. 10, 1875.]

Brief.-A composition of'ono part lima, six parts carbonate of lime, ten para and 01' powdered atom, and sufiicieuz mam-glass to produna a mass of the oonm'swncy of mortar. This mastic is then spread on the roof-boa which an preferably nan-ow strips, and before the mantis sets or becomes hard, nails may be driven through the mastic, and parnially into the roof-boapin. i W,

The composition of lime, carbonate of mg, sand, and Wain-glass, substantially as and m the pronortiona set forth.

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PATENT OFFICE.

EMIL KUNZENDORF, OF NEWARK, NEW JERSEY.

IMPROVEMENT IN FIRE-PROOF ROOFING COMPOSITIONS.

Specification forming part of Letters Patent No. 161,689, dated April 6, 1875; application filed March 10, 1875.

To all whom. it may concern:

Be it known that I, EMIL KUNZENDORF, of Newark, in the county of Essex and State of New Jersey, have invented a new and Improved Fire-Proof Roofing Composition, of which the following is a specification:

The drawing represents a vertical section of a roof covered with my improved compo sition.

This in :ention relates to a new composition for covering roofs and rendering them secure against the attack of fire, and against the injurious influgnces of the atmosphere, and which will, wh'enrapplied, allow the whole surface of the roof to be one continuous mass, though capable of being applied in blocks or sections of suitable size and shape.

My improved composition consists of the following ingredients, in about the proportions set forth, to wit: One part of lime six parts of carbonate of lime ten pam' sand or owdered stone and sufiicient waterlass {Emu rm silicate of potassal to produce a mass of the consistency of plastic cement. The lime and the carbonate of lime are first finel owdered, and are then mixed with the also be finely sifted, or with the finely-powdered rock, and then these solid ingredients are mixed with the waterglass, and the mixture stirred to equally distribute the ingredients. This mixture cap then be applied to the surface of a wooden roof, preferably to a roof constructed of narrow boards, a, which will not be likely to shrink or warp, and the entire roof may be covered with a continuous covering, b, because, although the mass at the edges dries very rapidly, adhesion will still take place when the plastic mass is applied to dried portions. The

longer affected by the same solvent after it has once become hard.

The composition may also be formed into blocks or sections, of suitable size and shape, in molds, and then applied to the roof or other surface which it is intended to cover, and may be used not only on roofs, but also as a coating for walls of houses or other structures. \Vhile the covering is still plastic nails 0 may be driven through it into the wood, as shown. The composition fenders a roof or wall practically fire-proof, and also proof against the attacks of the atmosphere, leaving the same, however, sufliciently strong for all ordinary purposes. The proportion of the carbonate of lime may be increased to about erg 1 par s, o a cam greater hardness; or the quantity of sand or powdered rock may be increased to fourteen par s, o 0 am more body. Instead of sand or'rock,slag from ironfurnaces can be used.

0 arm as my invention- The composition of lime, carbonate of lime, sand, and water-glass, substantially as and in the proportions set forth.

E. G. WEBB, F. V.-BR1EsEN.

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